Maybe I'm being overly critical, I've just never seen or heard of any guy pinching and holding his foreskin over the head and then stroking the shaft simultaneously with the other hand, and don't see how it would be pleasurable. I do pinch and tug at my skin in isolation though, and enjoy it (even more so when a girl does it).
Anyway, I reviewed some of Ms. Ling's other works, and she is definitely no stranger to fucking or sucking uncut cock. All of the handjob vids I could find, however, featured cut cocks. In scenes I saw her in with uncut guys, when she strokes them during BJs she tends to hold their foreskin back with one hand, and stroke the shaft and head with the other. Therefore, I stand my original opinion that she is ignorant about how to manipulate an uncut cock. 🙂
